One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,5,4)(3,7,8,6)(11,15)(14,16)(17,18,21,26)(19,28,29,23)(20,32,34,25)(22,24,36,27)(30,38,33,41)(31,37,43,39)(35,42,46,40)(44,48,45,47)(1,3)(2,6)(4,7)(5,8)(10,13)(11,15)(17,19,21,29)(18,23,26,28)(20,33,34,30)(22,31,36,43)(24,39,27,37)(25,41,32,38)(35,45,46,44)(40,47,42,48)(1,2,5,4)(3,6,8,7)(9,10)(11,14)(12,13)(15,16)(18,24)(19,29)(20,34)(22,36)(23,37)(25,42)(26,27)(28,39)(32,40)(38,48)(41,47)(44,45)(1,4,5,2)(3,6,8,7)(10,13)(14,16)(17,20,21,34)(18,25,26,32)(19,30,29,33)(22,35,36,46)(23,38,28,41)(24,40,27,42)(31,44,43,45)(37,47,39,48)(9,11,12,15)(10,14,13,16)(18,26)(19,29)(20,34)(24,27)(31,43)(35,46)(38,41)(47,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.